News tagged with number
Researchers identify mechanism that maintains stem cells readiness
An immune-system receptor plays an unexpected but crucially important role in keeping stem cells from differentiating and in helping blood cancer cells grow, researchers at UT Southwestern Medical Center report today in the ...
May 31, 2012 |
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Proposed new Internet neighborhoods unveiled June 13
The agency in charge of website addresses has picked June 13 as the day it will reveal proposed new names for online neighborhoods breaking the ".com" mold.
May 30, 2012 |
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Engineered materials: Custom-made magnets
A novel approach to designing artificial materials could enable magnetic devices with a wider range of properties than those now available. An international team of researchers have now extended the properties ...
May 24, 2012 |
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Website address 'revolution' back in motion
The Internet domain name "revolution" was back in action on Tuesday with the agency in charge of website addresses once again taking applications for online neighborhoods breaking the ".com" mold.
May 22, 2012 |
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ICANN resumes bids for new Internet suffixes
(AP) -- The organization overseeing a major expansion of Internet addresses has reopened its system for letting companies and organizations submit proposals.
May 22, 2012 |
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Internet safe spot planned at ".secure" domain
Internet security specialists have applied for a ".secure" domain that they plan to turn into an online safe zone where bad guys aren't allowed.
May 11, 2012 |
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Digital 'wallets' proliferate at cellphone show
Cash, coins and credit cards are so Twentieth Century. At least, that's the opinion of the electronics manufacturers, phone companies, banks and credit card issuers that expect cellphones to be the main way consumers pay ...
May 10, 2012 |
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Internet address expansion set despite ".worries." (Update)
Bidding will begin this week for words and brand names such as ".sport," ".NYC" and ".bank" to join ".com" as online monikers.
Jan 10, 2012 |
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Pasta-shaped radio waves beamed across Venice
A group of Italian and Swedish researchers appears to have solved the problem of radio congestion by cleverly twisting radio waves into the shape of fusilli pasta, allowing a potentially infinite number of channels to be ...
Mar 02, 2012 |
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Neural network learns to identify group sizes without knowledge of numbers
(PhysOrg.com) -- A cognitive sciences research duo out of Università di Padova, in Italy, have succeeded in building an artificial intelligence network that has through repetition, learned to identify relative group ...
Technology / Computer Sciences
Jan 23, 2012 |
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A classic model for ecological stability revised, 40 years later
A famous mathematical formula which shook the world of ecology 40 years ago has been revisited and refined by two University of Chicago researchers in the current issue of Nature.
Feb 19, 2012 |
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CNT paper-based wireless sensor could help detect explosive devices
(PhysOrg.com) -- Researchers at the Georgia Institute of Technology have developed a prototype wireless sensor capable of detecting trace amounts of a key ingredient found in many explosives.
Nanotechnology / Nanomaterials
Oct 27, 2011 |
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Freezing liquids help to predict properties of prime numbers
(Phys.org) -- The same freezing which is responsible for transforming liquids into glasses can help to predict some patterns observed in prime numbers, according to a team of scientists from Queen Mary, University ...
May 03, 2012 |
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Time likely to end within 5 billion years, physicists calculate
(PhysOrg.com) -- As far as astrophysicists can tell, the universe is expanding at an accelerating rate, and will likely continue to do so indefinitely. But now some physicists are saying that this theory, ...
Oct 01, 2010 |
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Facial recognition software could reveal your social security number
According to a new study which will be presented August 4 at the Black Hat security conference in Las Vegas, technology has made it possible to identify and gain the personal information of strangers by using facial recognition ...
Aug 02, 2011 |
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Number
A number is a mathematical object used to count and measure. In mathematics, the definition of number has been extended over the years to include such numbers as zero, negative numbers, rational numbers, irrational numbers, and complex numbers.
Mathematical operations are certain procedures that take one or more numbers as input and produce a number as output. Unary operations take a single input number and produce a single output number. For example, the successor operation adds one to an integer, thus the successor of 4 is 5. Binary operations take two input numbers and produce a single output number. Examples of binary operations include addition, subtraction, multiplication, division, and exponentiation. The study of numerical operations is called arithmetic.
A notational symbol that represents a number is called a numeral. In addition to their use in counting and measuring, numerals are often used for labels (telephone numbers), for ordering (serial numbers), and for codes (e.g., ISBNs).
In common use, the word number can mean the abstract object, the symbol, or the word for the number.
For more information about Number, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
